Apron movement for carry type scrapers



April 1o, 1951 A A, VERESCHAGN 2,548,754

APRON MOVEMENT FOR CARRY TYPE SCRAPERS Filed Aug. 27, 1947 2 Sheets-Shea?. 1

/3 IN V EN TOR.

A/x A. Varese/mgm lo, A, A VERESCHAGIN APRON MOVEMENT FOR CARRY TYPE SCRAPERS Filed Aug. 27, 1947 2 Sheets-Shee. 2

INVENTOR. l A/@x Varese/mgm BY SHL`-Q`AW Aff'y Patented Apr. l0, 1951 UNITED STATES PATENTl OFFICE` APRON MOVEMENT FOR CARRY TYPE SCRAPERS Alex A. Vereschagin, Orland, Calif.

Application August `27, 1947, Serial No. 770,806

` 2 Claims. (Cl. @iv-126) This invention relates to improvements in apron movement for earth movers. Y

The principal object of this invention is to provide means for moving .earth onto the carrier of an earth mover in such a manner that the piling up of the earth `on the .carrier is materially assisted, thus eliminating a large amount of the power required to move the earth mover as a whole over the ground.

i A further object is to produce a device of this character which may be attached to and used with the ordinary earth mover withoutmaterially altering its construction.

A still further object is to provide means whereby the apron blade may be actuated forwardly and rearwardly while the earth mover is progressing over the ground.

Another object is to produce a 4device of this character which is economical to manufacture, simple to use and in which the vparts will not become easily deranged.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming apart of this specification and inv which like numerals are employed to designate like parts throughout the same,

Fig. l is a side elevation of an earth vmover partly in cross section and showing my device applied thereto, the blade being in `retracted `position.

Fig. 2 is a similar view showing the blade Ain carrying position.

Fig. 43 is a cross sectional view taken on the line 3-3 of Fig. '2 and on a reduced scale.

Fig. 4 is a view similar to Fig. l showing the blade in advanced position.

Fig. 5 is a diagrammatic view showing the yvarious positions the blade assumes from Aits retracted position to its forward position, and

Fig. 6 is a top plan View taken on a reduced scale.

`In the moving of earth von a large scale it has been the generally accepted practice to employ heavy duty scrapers which consist of a wheeled structure having a carrier which is provided with a digging plate so that Iwhenthe carrier is lowered to scraping position this plate vbites into the earth, and as the carrier moves forwardly the earth is scooped up into the carrier, the earth tumbling .l

as it is shoved rearwardly into the carrier.

As the earth commences to accumulate in the carrier the power required to move the carrier materially increases until the carrier frequently becomes stalled before it has received a full load.

It, therefore, becomes necessary to use a 'bulldozer or other traction means to assist in pushing or pulling the carrier to further ll the same.

Applicant has, therefore, devised a blade (which at the present time is merely used to hold the lload in the carrier during transportation), which Yblade assists in moving the earth into the vrear of the carrier so that the digging lpoint can load more earth thereinto without the resistance of the previous earth which has piled up within the carrier, and by actuating the blade [back and forth during the ,forward movement of the carrier the earth .elevated by the digging action of the carrier will be `continuously pushed rearwardly out of the way of the incoming earth, thus reducing the resistance and consequently the power required to move the .carrier as a whole over the ground.

After the carrier has 'been fully loaded, the blade can then be placed at a position to lho'ld the dirt wit-hin the carrier while the same is be- .ing transported to a, distant point.

In the accompanying Vdrawing wherein for the purpose of illustration is shown a preferred embodiment .of my invention, the numeral 5 ,represents the carrier of an earth Arnover designated as a whole by the numeral 6.

The customary v.ground engaging wheels are shown .at "L 'Ihe carrier has a forward cutting edge 8 which when lowered bites into the ground and scoops up earth into the carrier as shown at A in Fig. '1.

The device as a whole is moved over the ground under its own power, or by being 4pushed or pulled by an independent tractor. y

It is customary to provide a `blade which may be dropped down against vthe forward edge 8 for the purpose of carrying earth to a remote point and to prevent vthe .earthyfrom spilling out of the carrier.

The arrangement thus far described is comm-on to Aall earth movers and my improvement consists in providing a `blade which will also act as a drag for the purpose of assisting in moving the carrier toward the blade .and thereby causing .the top layer of earth 'to be banked up againstthe blade and to 'be received on the carrier.

Referring to Figs. 1 and 3, it will be noted that Ijhave -:provided apair of plates B and Il which .are supported in opposed Atracks 'l2 and 'I3 vthrough the medium of rollers mounted on the plates 9 and ll.

'Extending between 'these plates is a spreader bar I4 to which is hingedly secured as at I and Il a'blade i8.

'Drag lines I9 and 'll are reeved over pulleys 22 and A23 respectively andhave one end connected to an eye secured to the forward edge of the plates 9 and Il respectively, vand their other ends Aare in .turn connected to the winch of the ,power unit.

Retrieving.lineslllare connected to eyes forme on the `rear of theplates. The `operation of my device fis as follows:

` Assuming that a digging cperation'is about to commence, the initial digging of the forward edge 8 will lift earth into the carrier, which earth will pile up, as shown at A in Fig. 1, tending to resist the further movement of earth into the carrier and thus adding to the tractive effort of moving the carrier over the ground.

As previously stated the lines I9 and 2I extend to the power unit, that is to the winding drum of a tractor. By actuating this drum. tension is exerted on these lines to the effect, assuming that r that Figure and thus penetrates the upper layer of earth and anchors the blade I8 in the earth.

At this 'timethe forward edge 8 of the carrier is spaced, as shown well rearwardly of the bottom earth engaged edge of the blade I8. Since the bladeis engaged in undisturbed earth any further pull on the lines I9 and"2I will cause movement of the carrier-forwardly towards the blade 'I8 and in this forward movement the portion 8 will pare off a layer of earth which will mound up on the front of the carrier. When the carrier reaches the position shown in full lines in Fig. the earth between thecarrie'r and the blade at D will have so loosened that the blade will no longer be anchored but the carrier will lessen its forward movement and the blade will move through the positions E, F, G and H thus pushing earth into the carrier.

By an inspection of Figure' it will be seen that there is a downward movement through the positions B, C and D.' During this time the forward end of the member 9 travels downwardly as does the rear'and lower end of that member. On arriving at the position D the forward end still continues to move downward while the lower rear end moves slightly upward. This upward movement wherein the member I8 passes from the position D to the position E, is notv however sumcient to clear the lower end of the member I8 from its engagement in the`undis'turbed portion of the ground in which such lower end is embedded. It is during this time that the member 5 moves forwardly. In other words, the member' I8 remains practically anchored from the position D nearly to the position E, at which time only materialscooped up by the member 5, such material being fully loosened, remains in between the members I8 and 5 and in such a loose condition as no longer to afford sufcient resista-nce to the member I8 t0 effect further forward movement of the member 5. This will leave the member I8 to continue movement through the positions F, G

and H, the latter being the position shown in Figure 4.

By actuating the retrieving lines 24, the blade will return to its Fig. 1 position and in so doing 'the plate will hinge whenever an obstruction is encountered, as for example, the oncoming earth ,J. (See Fig. 4). The blade will, therefore, pass over this newly accumulated pile and when it reaches the position of Fig. 1 itV will then be ready to be actuated to again push the earth J to the rear of the carrier.

Thus, as the carrier moves over the ground in a continuous operation, the blade is reciprocated 'back and forth so as to move the earth into the carrier and then after the same has been loaded the blade is moved to the position shown in Fig. 2, which is a holding position, so that the earth will not fall out of the carrier during transportation.

4 The carrier as a whole will now be raised so as to move the forward edge 8 out of digging position while the load is being transported to a distant point.

It will thus be seen that by continuously moving the earth being excavated into the back of the carrier a large amount of resistance is removed and a consequent reduction is effected in the amount of power required to move the carrier over the ground to complete a digging operation. It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the material, size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In an earth mover, a pair of transversely connected side frames, a carrier fixed between said side frames and having a forward earthcutting edge, a pair of guide members fixed to the inner surface of each side frame, each of said guides extending downwardly and rearwardly along the frame sides, and then extending rearwardly and upwardly along said sides, one guide of each .pair being located below the other guide of the pair, a plate member for each pair of guides, having spaced rollers engaging the respective guides, a shovel-like blade carried by said plate members and depending therefrom, pulleys on said side frames and cables xed to eyes carried by said plate members and extending around said pulleys and forwardly for connection to a winding means of a propelling vehicle, said guides being arranged to cause said blade to move downwardly and rearwardly to said cutting edge, and then rearwardly and upwardly over the carrier.

2. In an earth mover a pair of transversely connected side frames, a carrier ixed between said side frames and having a forward earth cutting edge, a pair of guide members fixed on the inner face of each side frame, each of said guides extending downwardly and rearwardly along the frame sides and then extending rearwardly and upwardly along said sides, one guide of each'pair being located below the other guide of the pair, a plate member for each pair of guides, having Y spaced rollers engaging respective guides, a

shovel-like blade carried by said plate members and depending therefrom, pulleys on said Side frames, cables fixed to eyes carried by said plate members and extending around said pulleys and forwardly for connection to a winding means of a propelling vehicle, said guides being arranged to cause said blade to move downwardly and rearwardly to said cutting edge and then t0 move rearwardly and upwardly over the carrier, and a further cable connected to said plate member' and extending forward therefrom.

ALEX A. VERESCHAGIN.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 2,198,087 Moore Apr. 23, 1940 2,306,066 LeBleu Dec. 22, 1942 2,425,664 zakei Aug. 12, 1947 

